diff --git a/Classes/Service/DeeplTranslationService.php b/Classes/Service/DeeplTranslationService.php
index d136f09..1fa2a18 100644
--- a/Classes/Service/DeeplTranslationService.php
+++ b/Classes/Service/DeeplTranslationService.php
@@ -445,7 +445,7 @@ protected function canFieldBeTranslated(string $tableName, string $fieldName, ?s
             $result = true;
         }
 
-        $event = GeneralUtility::makeInstance(CanFieldBeTranslatedCheckEvent::class, $tableName, $fieldName, $fieldValue, $result);
+        $event = GeneralUtility::makeInstance(CanFieldBeTranslatedCheckEvent::class, $tableName, $fieldName, $fieldValue ?? '', $result);
         $this->eventDispatcher->dispatch($event);
         $result = $event->getCanBeTranslated();